Undamned InfiniKey-CPS1-S Encryption Key Replacement PCB

The Undamned InfiniKey-CPS1-S is the ultimate solution for arcade collectors and MAME enthusiasts looking to restore classic Capcom CPS1 arcade boards. This precision-engineered PCB replaces the encryption key stored in Capcom C-Boards that use a battery and B-21 chip, breathing new life into your vintage arcade systems.

Technical Specifications

• Replaces battery-backed encryption keys in CPS1 C-Boards
• Compatible with B-21 chips: 90630C-4, 90631C-5, 92641C-1
• Designed by UD Game Tech (Undamned)
• Professional-grade PCB construction
• Easy installation with included documentation

Compatible Games

• Captain Commando
• King of Dragons
• Knights of the Round
• Quiz & Dragons
• Wonder 3 / Three Wonders
• Varth (metal case required)
• Capcom World 2 (metal case required)

Perfect For

This PCB is essential for arcade cabinet owners, MAME builders, and collectors who want to preserve their original Capcom CPS1 hardware. Whether you're restoring a vintage cabinet or building a dedicated MAME system, the InfiniKey-CPS1-S ensures your classic games run perfectly without battery dependency.

Why Choose InfiniKey-CPS1-S

• Eliminates battery replacement hassles permanently
• Maintains 100% compatibility with original hardware
• Trusted quality from respected arcade hardware designer
• Comprehensive installation support and documentation
• Essential for long-term arcade preservation

Note: Not compatible with plastic case variants of Capcom World 2 and Varth due to size constraints.